<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <div v-if="books.length>0">
        <table>
            <thead>
                <th></th>
                <th>书籍名称</th>
                <th>出版日期</th>
                <th>价格</th>
                <th>购买数量</th>
                <th>操作</th>
            </thead>
            <tbody>
                <tr v-for="(item, index) in books">
                    <td>{{item.id}}</td>
                    <td>{{item.name}}</td>
                    <td>{{item.date}}</td>
                    <td>{{item.price | showPrice}}</td>
                    <td>
                        <button @click="declement(index)" v-bind:disabled="item.sum<=1">-</button>{{item.sum}}
                        <button @click="inclement(index)">+</button>
                    </td>
                    <td><button @click="removeRow(index)">移除</button></td>
                </tr>
            </tbody>
        </table>
        <h3>总价格：{{getTotalPrice()}}</h3>
        </div>
        <h2 v-else>购物车为空</h2>
    </div>
    <script src="../vue.js" type="text/javascript"></script>
    <script src="./js/p41.js" type="text/javascript"></script>
</body>
</html>